There are threads on nearly every page of the New York forum asking for advice on buying or "building" a post ban AR15 that is legal in NY. For the sake of helping out my fellow NY brothers, I wanted to compile a quick reference thread that covers the key points of NY's AWB and what options are available for a NY ban compliant AR15.

NRA/ILA has compiled this summary of New York's firearms laws, including a section on "Assault Weapons":

ASSAULT WEAPONS
It shall be unlawful to possess any “assault weapon”
or “large capacity ammunition feeding device.” So called
assault weapons lawfully possessed prior to September
14, 1994 and large capacity ammunition feeding devices
manufactured prior to such date can continue to be
lawfully possessed..
“Assault weapon” is defined as:
A semiautomatic rifle that has an ability to accept a detachable
magazine and has at least two of the following characteristics:
• a folding or telescoping stock;
• a pistol grip that protrudes conspicuously beneath the action
of the weapon;
• a bayonet mount;
• a flash suppressor or threaded barrel designed to accommodate
a flash suppressor;
• a grenade launcher.

Here is where you have your first decision to make: Do I want a "pre-ban" rifle or do I comply with the "post ban" provisions?

Buying a pre-ban rifle means that the lower receiver (the part with the serial number on it) must indicate that it was manufactured prior to 9-14-94. This will limit your choice of lowers and you will find that pre-ban lowers command a premium. If you elect to spend the extra money to obtain a pre-ban lower, then you will be able to enjoy all of the characteristics otherwise restricted from post-ban rifles including flash hiders/suppressors, collapsable stocks and bayonet lugs.

Many NY AR15 owners instead elect to make their rifles post-ban compliant. Referring back to the "Assault weapon" definition, you'll notice that a pistol grip is considered one of the charasteristics. Most AR15 owners opt for the pistol grip as their one allowable feature so now you would need to eliminate the other common characteristics: a folding or telescoping stock, a bayonet mount and a flash suppressor or threaded barrel.

Your choices for making the rifle ban compliant fall into one of several categories:

1. Buy a complete rifle that has been made ban compliant.
2. Buy the upper and lower seperately ensuring that each section is ban compliant.
3. Buy from a vendor who will make the upper and/or lower ban compliant for you.
4. Buy and ship your upper and/or lower to a vendor who will make it ban compliant for you.
5. Make the upper and/or lower ban compliant yourself.

Let's take a closer look at each option.

1. Buy a complete rifle that has been made ban compliant.

There are several manufacturers who sell AR15's in a ban compliant version. These companies include, but are not limited to, Bushmaster, Rock River Arms, LMT, Smith&Wesson M&P,DPMS, and CMMG. The obvious benefit is that you can buy a complete rifle directly from the manufacturer and do nothing else to ensure that you are complying with New York's AWB provisions. The downside is that you are limiting yourself to a specific pre-packaged setup that may not be exactly what you'd like. Costs will vary depending upon the actual rifle. Order turnaround times will vary even more so make sure you ask before buying.

Your local dealers may also carry these ban compliant versions in stock as well. Being able to hold and inspect the rifle before your make the decision to buy is a strong advantage. Depending on the dealer, they may also be able to offer you options not included with the standard ban compliant version offered by the manufacturer. For example, they may be able to switch out the stock or pin a different muzzle brake for you. Either way, you can walk out the door with a ban compliant AR15 and peace of mind. The main disadvantage is that you will be paying a retail premium to do so. You will need to decide for yourself what is most important to you.

2. Buy the upper and lower seperately ensuring that each section is ban compliant.

Putting an upper and lower together is as simple as pushing in two pins. You do not need any tools or training. Simply order the upper/lower of your choice and snap them together. (As an aside, I am referring to "complete" uppers and lowers.)

You can go one of two directions with buying a lower: select a fixed stock (these are by definition ban compliant) or a folding/telescoping stock. Fixed stocks could include the A2, Ace, Sully, or even a Magpul PRS. If you choose one of these options, then there is nothing more you need to do to make your lower compliant. You could also choose from any number of collapsable stocks including the standard M4, Magpul's MOE, CTR, ACS, or UBR. If you select a collapsable stock, it must be "pinned" so as to make the stock fixed. Your local dealer will likely do this for you before you can take home your new lower. Expect a cost of $30 or so. Since stocks are such a personal preference item, you will need to decide for yourself if the added cost of pinning a collapsable stock is worth it.

The same companies linked above also sell complete uppers that comply with the AWB. Options will vary by manufacturer and the nice thing is they can ship directly to you and do not need to go through a FFL. If you order an upper without the fixed front sight base (FSB), then there is no bayo lug to worry about shaving off. Ban compliant uppers with a FSB will ship with the lug shaved off. The barrel will either be (a) unthreaded and lacking any muzzle device, or (b) have a muzzle brake (not break ) permanently attached at the end of the barrel giving a total overall barrel length of 16" or more. Options for brakes will vary by manufacturer, but generally do not offer much selection. A seperate paragraph on legal muzzle devices will follow later. With so much confusion over what is legal and what isn't, buying your upper directly from the manufacturer in a ban compliant format takes all of the guesswork away.

3. Buy from a vendor who will make the upper and/or lower ban compliant for you.

There are a number of industry partners right here on arfcom who combined sell pretty much every upper or lower you could want: Noveske, Colt, Bravo Company, LMT, Daniel Defense, KAC, etc. Many of them will also perm attach a muzzle brake and/or shave the bayo lug as an option. You can save yourself the extra cost and hassle of shipping by simply choosing a vendor who will make the upper compliant for you. Many of these vendors also manage their own boards in the Industry forum and actively participate in discussing their services. A partial list of the vendors you might consider includes Denny's/GTS, MSTN, Spike's, Rainier Arms, AR15 Performance, and ADCO. Some of these vendors offer very customized uppers!

4. Buy and ship your upper and/or lower to a vendor who will make it ban compliant for you.

Your local FFL may be able to offer or outsource such services as a perm attach of a muzzle brake. Make sure you get references or samples of this work before sending your components to him! Costs will vary so make sure you ask first. If your local alternatives do not suit you, then you can ship your upper and brake to a vendor yourself. Some manufacturers will even ship the upper directly to this vendor for you. For every thread started on arfcom requesting a good place to go for perm attaching a muzzle brake, you will see the name ADCO repeated over and over. There's a very good reason for this: they do a great job and will return your upper to you quickly. You truly get what you pay for with ADCO.

5. Make the upper and/or lower ban compliant yourself.

There is an entire section of this board dedicated to BIY or "Build it Yourself". The upside is that if you have the tools and are somewhat handy, then you can minimize the cost of making your AR15 NY ban compliant. The downside is that you run the risk of not achieving a finished product that would be considered compliant. In other words, you have no one to blame for the final outcome other than yourself.

It should be noted that there is no specified method from BATFE or NYSP for pinning a collapsable stock. Shaving a bayo lug is as simple as using a Dremmel with the necessary attachments. BATFE has issued letters in support of perm attachment methods for muzzle brakes, however, the NYSP may be using their own interpretations which are as of yet unpublished. Do your homework before attempting these modifications on your own.

Muzzle brakes

Let's get one thing clear - flash hiders and flash suppressors are illegal in New York. If you are going to add a muzzle device to your barrel, it should be a muzzle brake. Some of the brake/compensator/hiders are also GTG and will usually reference a BATFE letter stating the device is a non-flash suppressor (BATFE has discontinued this practice with newer products). The downside to using a muzzle brake is that they can be loud, some more so than others. They will also add an extra $30 to $100 to the cost of your new AR15. One very popular muzzle device legal to use in New York is the PWS FSC556. For $95, you get a device that combines the attributes of controlling muzzle climb and some flash mitigation with a BATFE letter certifying it as a non-flash suppressor. Other legal choices would include, but are not limited to Bushmaster's Izzy Muzzle Brake, MSTN QCB Muzzle Brake, RRA Tactical Muzzle Brake, Rainier Arms XTC, and the POF .223 flash hider kit (GTG per 762DM).

As a rule of thumb, muzzle devices referred to as "flash hiders" or "flash suppressors" are not legal while devices referred to as "muzzle brakes" are ok. Read the description carefully! You should be looking for specific language in the product description that states the device is legal for AWB states or includes a BATFE letter certifying it is a non-flash suppressor.

My experiences

My first NY compliant "build" was a LMT upper and lower that I purchased from Denny's Guns/GTS. I also purchased the FSC556 from Denny and he perm attached the device and shaved the bayo lug prior to shipping it to me. The lower was shipped to my local dealer who pinned a Magpul CTR stock prior to me picking up the complete lower. In hindsight, I should have bought a MOE stock since pinning it makes the added cost of the CTR's friction lock an unecessary expense. Here's what that rifle looks like in its current NY ban compliant configuration:

Denny's perm attach of the FSC556:

Denny's shaved bayo lug:

Here's a perm attach done by ADCO on a BCM middy with a FSC556:

Here is a FUBAR'd perm attach done by a local hack on my Noveske 6.8SPC recce rifle that was later corrected by ADCO :

My next upper will have the perm attach done directly by BCM as soon as their 14.5" middy uppers come back in stock :

Conclusion:

The best advice I can give to those who want a ban complaint rifle in New York is to start by selecting the complete AR15 or individual upper and lower of your choice, then select one of the methods outlined above to make it NY ban compliant.

I would only add that there is no requirement in the PL that you have a BATFE letter stating your muzzle device is non flash suppressing. It is nice to have, but not legally mandated as these are NY laws, not federal. Also, I believe that the BATFE is no longer furnishing decisions on FH v. Brake/Comp.

Originally Posted By Castillo:Great write up!! You even spelled 'brake' correctly

I would only add that there is no requirement in the PL that you have a BATFE letter stating your muzzle device is non flash suppressing. It is nice to have, but not legally mandated as these are NY laws, not federal. Also, I believe that the BATFE is no longer furnishing decisions on FH v. Brake/Comp.

Thanks Castillo.

Yes, the BATFE letter just serves as peace of mind. I actually keep a copy of the FSC556 letter in my range bag as a precaution. Heard the same story on availability of any new BATFE letters too.

It's actually not that difficult pinning a brake, if you can use a drill, and you have a friend with a welder!!! Once all the drilling is done, it's basically a spot weld. I had my friends brother doing work in my house, noticed his TIG welder, drilled out my two newly acquired uppers, made "pins" from an old drill bit, and then it basically took him 2 minutes to spot weld over the holes on both uppers. Hit them with the Dremel and some cold blue, and WALLAH!!

Cutting off the lug is even easier!! But, patience is key when pinning a stock, and you have to make sure you don't drill all the way through, otherwise it can be construed as "easy to remove".

There is one bit of news I heard recently while browsing a local gun store in Nassau county, LI, and I'm not sure if the store owner was just trying to freak me out.

He basically told me "Your guns are not legal!!" When I asked why, he said the sheriff is now saying that any mods MUST BE DONE BY THE MANUFACTURER to be legal. I called bull shit because I said what about folks who LEGALLY buy uppers without mods? And then have them done? He couldn't answer the question, so I am posing it here.

AND ALL PLEASE EXCUSE CAPS NOT YELLING ONLY WAY I CAN TYPE BUT I HAVE BEEN TOLD THE SAME BY TO LOCAL FFL’S IN WESTCHESTER COUNTY AND ONE UP THE LINE THAT IF IT DOES NOT LEAVE FROM THE MANUFACTURER AND IS NOT MADE NYS COMPLIANT IT IS ILLEGAL.

GOT INTO A LITTLE DISAGREEMENT BUT NO GOOD THEY SAID ACCORDING TO NYS LAWS THE GUN HAS TO LEAVE THE MANUFACTURE WITH THE SERIAL # THAT PROVES IT WAS MADE NYS COMPLIANT. AND THEY EVEN WENT ON TO SAY IT CAN’T BE SENT TO ANYONE OF OUR SPONSOR’S TO BE MODIFIED.

ONE FFL SAID THAT A CUSTOMER HAD BOUGHT A GUN FROM GUNBROKER AND HAD ALL MODIFICATION’S DONE NOT TO SURE WHERE AND WHEN THE FFL RECEIVED IT HE REFUSED TO TRANSFER THE GUN TO THE BUYER.

It's actually not that difficult pinning a brake, if you can use a drill, and you have a friend with a welder!!! Once all the drilling is done, it's basically a spot weld. I had my friends brother doing work in my house, noticed his TIG welder, drilled out my two newly acquired uppers, made "pins" from an old drill bit, and then it basically took him 2 minutes to spot weld over the holes on both uppers. Hit them with the Dremel and some cold blue, and WALLAH!!

Cutting off the lug is even easier!! But, patience is key when pinning a stock, and you have to make sure you don't drill all the way through, otherwise it can be construed as "easy to remove".

There is one bit of news I heard recently while browsing a local gun store in Nassau county, LI, and I'm not sure if the store owner was just trying to freak me out.

He basically told me "Your guns are not legal!!" When I asked why, he said the sheriff is now saying that any mods MUST BE DONE BY THE MANUFACTURER to be legal. I called bull shit because I said what about folks who LEGALLY buy uppers without mods? And then have them done? He couldn't answer the question, so I am posing it here.

The Sheriff is wrong. Of course you can do the mods yourself if you are building your own. They are just parts until installed on the lower receiver. An FFL can accept post ban weapons. As usual, don't heed advice heard in gun stores.

Can you own non compliant parts??? Lets say you have a Pinned stock on your Ar-15, but have a telescoping stock laying around the house.. can they say well you had the ability so make an Assult Rifle?.. And when dose it go from a parts gun, to a Rifle..? If you have everything minus a BCG, and still have to weld a "brake" on the barrel is that an Assult rifle?

Originally Posted By livin_in_sin85:Can you own non compliant parts??? Lets say you have a Pinned stock on your Ar-15, but have a telescoping stock laying around the house.. can they say well you had the ability so make an Assult Rifle?.. And when dose it go from a parts gun, to a Rifle..? If you have everything minus a BCG, and still have to weld a "brake" on the barrel is that an Assult rifle?

It's the complete LOWER that makes it a complete firearm. If you have a functioning (post ban) LOWER with non-ban compliant parts attached, you are breakin the law.

It's a grey area as to whether or not having those ban compliant parts "laying around" is illegal or not...it's the decision of the jury I would guess as to whether or not you showed "intent."

FFLs can choose to not transfer any firearm to a buyer..some are overly paranoid about keeping their licenses, and do not even care to fully learn the laws of NY, and service their customers...In my experience, not every FFL holder in NY is interested in the protection of the 2nd Amendment when it comes to "Black Rifles"...they are content to deal in deer rifles, and other hunting firearms onlyask around, and find a new FFL...Transfer fees vary greatly, as does their knowledge of the laws...We have some fine FFLs in NY, and some cranky, stubborn folks...
I know one FFL that will not accept any AKs...even Pre 89 Ban Chi-Coms originally imported into NY! (Sile)...YMMV

Originally Posted By BAR92M4:TokiWartooth.

AND ALL PLEASE EXCUSE CAPS NOT YELLING ONLY WAY I CAN TYPE BUT I HAVE BEEN TOLD THE SAME BY TO LOCAL FFL’S IN WESTCHESTER COUNTY AND ONE UP THE LINE THAT IF IT DOES NOT LEAVE FROM THE MANUFACTURER AND IS NOT MADE NYS COMPLIANT IT IS ILLEGAL.

GOT INTO A LITTLE DISAGREEMENT BUT NO GOOD THEY SAID ACCORDING TO NYS LAWS THE GUN HAS TO LEAVE THE MANUFACTURE WITH THE SERIAL # THAT PROVES IT WAS MADE NYS COMPLIANT. AND THEY EVEN WENT ON TO SAY IT CAN’T BE SENT TO ANYONE OF OUR SPONSOR’S TO BE MODIFIED.

ONE FFL SAID THAT A CUSTOMER HAD BOUGHT A GUN FROM GUNBROKER AND HAD ALL MODIFICATION’S DONE NOT TO SURE WHERE AND WHEN THE FFL RECEIVED IT HE REFUSED TO TRANSFER THE GUN TO THE BUYER.

Originally Posted By livin_in_sin85:Can you own non compliant parts??? Lets say you have a Pinned stock on your Ar-15, but have a telescoping stock laying around the house.. can they say well you had the ability so make an Assult Rifle?.. And when dose it go from a parts gun, to a Rifle..? If you have everything minus a BCG, and still have to weld a "brake" on the barrel is that an Assult rifle?

It's the complete LOWER that makes it a complete firearm. If you have a functioning (post ban) LOWER with non-ban compliant parts attached, you are breakin the law.

It's a grey area as to whether or not having those ban compliant parts "laying around" is illegal or not...it's the decision of the jury I would guess as to whether or not you showed "intent."

Speaking of telescoping stocks specifically.......if you have a pump shotgun, you could be saving the stock to put on that, for all anyone knows. Lots of people put them on pumps and pumps aren't in our AWB.

I've seen this come up before, but don't remember seeing an absolute answer on it (probably because there isn't one)...........but even if you have a complete post-ban lower with a telescoping stock installed. Most would say "No! It's already non-compliant, regardless of the upper; pistol grip + telescoping stock", right?

But you can buy a .50 bolt-action single-shot upper for a standard AR lower. So what then? It's not a semi-auto, so it's not regulated in the AWB.

<center id=center>"Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats."</center id=center>

Also don't forget that even if you buy an Olympic arms lower that was made before the 1994 ban that company has no way to help you prove it was a complete weapon before the ban went into effect. Every colt AR15 was sold as a complete weapon before the 94 ban so if you call Colt and they say the lower was made in 1988 you are good to go. Colt didn't sell lowers only. Olympic arms had a fire and a flood or some such nonsense that destroyed many of their records. Bushmaster for example can tell you if the pre 94 lower was made into a weapon before ban.

Three shot groups do not give a true picture of the accuracy of a rifle and ammunition combination. That is why the US Military requires 10-shot groups for the accuracy testing of the ammunition used by our Armed Forces.

Originally Posted By squirrell18:Also don't forget that even if you buy an Olympic arms lower that was made before the 1994 ban that company has no way to help you prove it was a complete weapon before the ban went into effect. Every colt AR15 was sold as a complete weapon before the 94 ban so if you call Colt and they say the lower was made in 1988 you are good to go. Colt didn't sell lowers only. Olympic arms had a fire and a flood or some such nonsense that destroyed many of their records. Bushmaster for example can tell you if the pre 94 lower was made into a weapon before ban.

Doesn't have to have been a complete rifle in NY, only the lower need be pre-ban.

Originally Posted By squirrell18:
Also don't forget that even if you buy an Olympic arms lower that was made before the 1994 ban that company has no way to help you prove it was a complete weapon before the ban went into effect. Every colt AR15 was sold as a complete weapon before the 94 ban so if you call Colt and they say the lower was made in 1988 you are good to go. Colt didn't sell lowers only. Olympic arms had a fire and a flood or some such nonsense that destroyed many of their records. Bushmaster for example can tell you if the pre 94 lower was made into a weapon before ban.

Incorrect they can give you a 2-3 month window as to when the lower was produced.

Looks like there's another new player in the muzzle brake market. The BattleComp is pricey, but the videos offer some interesting trials showing how well this comp reduces muzzle climb. It might be worth a try.

Originally Posted By JW1069:Looks like there's another new player in the muzzle brake market. The BattleComp is pricey, but the videos offer some interesting trials showing how well this comp reduces muzzle climb. It might be worth a try.

Originally Posted By squirrell18:Also don't forget that even if you buy an Olympic arms lower that was made before the 1994 ban that company has no way to help you prove it was a complete weapon before the ban went into effect. Every colt AR15 was sold as a complete weapon before the 94 ban so if you call Colt and they say the lower was made in 1988 you are good to go. Colt didn't sell lowers only. Olympic arms had a fire and a flood or some such nonsense that destroyed many of their records. Bushmaster for example can tell you if the pre 94 lower was made into a weapon before ban.

Incorrect they can give you a 2-3 month window as to when the lower was produced.

Yes they can tell you the year it was made but not how it left the factory. They in most cases can't tell you if it was a complete rifle before the ban. I would pass on that company as the parts are not standard mil-spec. I tried to put a colt M16A2 upper on a Olympic lower and the holes would not even line up. I then tried a bushmater M4 upper and it wouldn't line up. I had to sent it to Oly to have it replaced.

Three shot groups do not give a true picture of the accuracy of a rifle and ammunition combination. That is why the US Military requires 10-shot groups for the accuracy testing of the ammunition used by our Armed Forces.

Originally Posted By JW1069:Looks like there's another new player in the muzzle brake market. The BattleComp is pricey, but the videos offer some interesting trials showing how well this comp reduces muzzle climb. It might be worth a try.

That looks like a nice option. I really like my PWS FSC556 but that looks great also.

Three shot groups do not give a true picture of the accuracy of a rifle and ammunition combination. That is why the US Military requires 10-shot groups for the accuracy testing of the ammunition used by our Armed Forces.

Yes, the BATFE letter just serves as peace of mind. I actually keep a copy of the FSC556 letter in my range bag as a precaution. Heard the same story on availability of any new BATFE letters too.

An ATF TB letter from the manufacturer stating that the muzzle device is not a flash suppressor might do more than provide a little "piece of mind". It could be the difference between being arrested for possession of a assault weapon and worst case ultimately ending up as a convicted felon.

You really should include a disclaimer that (AFAIK) the ATF never approved a DIY method to pin a collapsible stock as they did for attaching barrel extenders and for "permanently" covering the threads on a barrel so it no longer could accept a flash suppressor.

As always you're on your own in NYS to determine the risk/benefit of pinning stocks, attaching non-approved muzzle devices, blocking LCAFDs etc. and what level of risk you're willing to assume. You might ultimately beat the rap but you won't beat the ride. YMMV.

The NRA/ILA reference needs to revised by the NRA as it does not reflect the current PL in a number of areas as amended since 2008.

Yes, the BATFE letter just serves as peace of mind. I actually keep a copy of the FSC556 letter in my range bag as a precaution. Heard the same story on availability of any new BATFE letters too.

An ATF TB letter from the manufacturer stating that the muzzle device is not a flash suppressor might do more than provide a little "piece of mind". It could be the difference between being arrested for possession of a assault weapon and worst case ultimately ending up as a convicted felon.

You really should include a disclaimer that (AFAIK) the ATF never approved a DIY method to pin a collapsible stock as they did for attaching barrel extenders and for "permanently" covering the threads on a barrel so it no longer could accept a flash suppressor.

As always you're on your own in NYS to determine the risk/benefit of pinning stocks, attaching non-approved muzzle devices, blocking LCAFDs etc. and what level of risk you're willing to assume. You might ultimately beat the rap but you won't beat the ride. YMMV.

The NRA/ILA reference needs to revised by the NRA as it does not reflect the current PL in a number of areas as amended since 2008.

OP updated with suggested disclaimer. If you see an updated NRA/ILA sheet, please post a link.

The NY AWB, whether by design or through complete ignorace, leaves law-abiding AR15 owners without a complete set of specific instructions for making a rifle compliant. This thread is intended as a resource for owning a ban compliant AR rifle in NY. For legal advice, consult your attorney.

OP updated with suggested disclaimer. If you see an updated NRA/ILA sheet, please post a link.

The only online resource that's up-to-date and readily available that I'm aware of is the NYS legislative resource. The only problem is it's a royal pain to navigate and use as a resource since you have to know what to look for before you can find it.

AND ALL PLEASE EXCUSE CAPS NOT YELLING ONLY WAY I CAN TYPE BUT I HAVE BEEN TOLD THE SAME BY TO LOCAL FFL’S IN WESTCHESTER COUNTY AND ONE UP THE LINE THAT IF IT DOES NOT LEAVE FROM THE MANUFACTURER AND IS NOT MADE NYS COMPLIANT IT IS ILLEGAL.

GOT INTO A LITTLE DISAGREEMENT BUT NO GOOD THEY SAID ACCORDING TO NYS LAWS THE GUN HAS TO LEAVE THE MANUFACTURE WITH THE SERIAL # THAT PROVES IT WAS MADE NYS COMPLIANT. AND THEY EVEN WENT ON TO SAY IT CAN’T BE SENT TO ANYONE OF OUR SPONSOR’S TO BE MODIFIED.

ONE FFL SAID THAT A CUSTOMER HAD BOUGHT A GUN FROM GUNBROKER AND HAD ALL MODIFICATION’S DONE NOT TO SURE WHERE AND WHEN THE FFL RECEIVED IT HE REFUSED TO TRANSFER THE GUN TO THE BUYER.

I was about to write "gun shop had-to-be-complete-from-factory BS in 3..2...1..." but you beat me to it

There is but one truth in the world and it is all yours. If you are not sure of it stay at home; but if you are sure don't look back and it will be your way.

Originally Posted By Dieter122:i think we should tack this thread. its a good one

Originally Posted By JW1069:Looks like there's another new player in the muzzle brake market. The BattleComp is pricey, but the videos offer some interesting trials showing how well this comp reduces muzzle climb. It might be worth a try.

FYI - Magpul has added a roll pin to their ACS stock that now permanently attaches the battery tubes. While the MOE and CTR stocks are easy enough to pin (as shown above), I'm not sure how you'd pin the new ACS stocks.